Startup Runway & Burn Rate Calculator – Excel Tool with 12-Month Cash Projection

Description
This Startup Runway & Burn Rate Calculator is a formula-driven Excel template built for startup founders, small business owners, and finance teams who need a clear, honest answer to one of the most important questions in early-stage business: how much time is left before the cash runs out. Running out of cash unexpectedly is one of the most common reasons startups fail — this tool exists to make sure that never happens without warning.

The template starts by capturing your current cash balance and monthly revenue, then breaks down monthly operating expenses into standard categories — Salaries & Payroll, Rent & Utilities, Marketing & Sales, Software & Tools, and Other Operating Expenses — which roll up automatically into Total Monthly Operating Expenses. From there, it calculates Gross Burn Rate (total monthly spend) and Net Burn Rate (spend minus revenue — the real rate cash is declining), and uses these to produce the headline number: Runway in Months, prominently highlighted, along with runway in years and an estimated cash-out date. If revenue already covers expenses, the tool correctly flags the business as profitable rather than showing a misleading runway figure.

What sets this template apart from a basic runway calculator is the built-in 12-Month Cash Projection. Rather than assuming a flat, unchanging burn rate, it applies user-defined monthly revenue and expense growth assumptions, compounding them forward month by month to show a much more realistic picture of how runway shifts as a business scales — including automatic status flags (Healthy, Critical, Cash Depleted) that make it immediately obvious which month cash is projected to run out. Every formula recalculates instantly as assumptions change, making this ideal for stress-testing different growth, hiring, or spending scenarios before they happen.